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RefreshMode Enumeration
Visual Studio 2010
Defines how the Refresh method handles optimistic concurrency conflicts.
Assembly: System.Data.Linq (in System.Data.Linq.dll)
| Member name | Description | |
|---|---|---|
| KeepCurrentValues | Forces the Refresh method to swap the original value with the values retrieved from the database. No current value is modified. | |
| KeepChanges | Forces the Refresh method to keep the current value that has been changed, but updates the other values with the database values. | |
| OverwriteCurrentValues | Forces the Refresh method to override all the current values with the values from the database. |
This enumeration applies to all Refresh overloads.
The following example overwrites current values with values from the database.
Northwnd db = new Northwnd("..."); try { db.SubmitChanges(ConflictMode.ContinueOnConflict); } catch (ChangeConflictException e) { Console.WriteLine(e.Message); foreach (ObjectChangeConflict occ in db.ChangeConflicts) { // All database values overwrite current values. occ.Resolve(RefreshMode.OverwriteCurrentValues); } }
The following example shows how to swap the original value with the values retrieved from the database. No current value is modified.
The following example keeps the current values that have been changed, but updates the other values with database values.
try { db.SubmitChanges(ConflictMode.ContinueOnConflict); } catch (ChangeConflictException e) { Console.WriteLine(e.Message); // Automerge database values for members that client // has not modified. foreach (ObjectChangeConflict occ in db.ChangeConflicts) { occ.Resolve(RefreshMode.KeepChanges); } } // Submit succeeds on second try. db.SubmitChanges(ConflictMode.FailOnFirstConflict);
Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
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